There are a couple of reasons why Puerto Rico is so popular. Sure, it‚Äôs a cultural magnet, not to mention a tropical paradise, but it‚Äôs also United States territory. These days, that matters to a significant slice of travelers who want something foreign, yet familiar. Now, United Airlines is putting Puerto Rico on sale, with one-way discount airfares starting as low as $109.

For more on this visit <a href="http://news.cheapflights.com/airlines/2006/10/puerto_rico_per.html">here.</a>